X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FMC%2FMCAsmInfo.cpp;h=100dc7c3dc60e799dc14b52936dd2dfd8b143d88;hb=4bf81882894d3bd261ef3c765b5b7dd28e9f09dc;hp=6e8cd0ce8d758c76d0ca7ae9e3fcacf01c258241;hpb=aac138e84dee1cb3ffc1035b2a1e4361fe0b4f80;p=oota-llvm.git

diff --git a/lib/MC/MCAsmInfo.cpp b/lib/MC/MCAsmInfo.cpp
index 6e8cd0ce8d7..100dc7c3dc6 100644
--- a/lib/MC/MCAsmInfo.cpp
+++ b/lib/MC/MCAsmInfo.cpp
@@ -13,30 +13,46 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/MC/MCAsmInfo.h"
-#include "llvm/System/DataTypes.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/Support/DataTypes.h"
+#include "llvm/Support/Dwarf.h"
 #include <cctype>
 #include <cstring>
 using namespace llvm;
 
 MCAsmInfo::MCAsmInfo() {
+  PointerSize = 4;
+  CalleeSaveStackSlotSize = 4;
+
+  IsLittleEndian = true;
+  StackGrowsUp = false;
+  HasSubsectionsViaSymbols = false;
   HasMachoZeroFillDirective = false;
-  NonexecutableStackDirective = 0;
-  NeedsSet = false;
+  HasMachoTBSSDirective = false;
+  HasStaticCtorDtorReferenceInStaticMode = false;
   MaxInstLength = 4;
-  PCSymbol = "$";
-  SeparatorChar = ';';
-  CommentColumn = 60;
+  MinInstAlignment = 1;
+  DollarIsPC = false;
+  SeparatorString = ";";
   CommentString = "#";
-  GlobalPrefix = "";
-  PrivateGlobalPrefix = ".";
+  LabelSuffix = ":";
+  UseAssignmentForEHBegin = false;
+  NeedsLocalForSize = false;
+  PrivateGlobalPrefix = "L";
+  PrivateLabelPrefix = PrivateGlobalPrefix;
   LinkerPrivateGlobalPrefix = "";
   InlineAsmStart = "APP";
   InlineAsmEnd = "NO_APP";
+  Code16Directive = ".code16";
+  Code32Directive = ".code32";
+  Code64Directive = ".code64";
   AssemblerDialect = 0;
-  AllowQuotesInName = false;
-  AllowNameToStartWithDigit = false;
+  AllowAtInName = false;
+  SupportsQuotedNames = true;
+  UseDataRegionDirectives = false;
   ZeroDirective = "\t.zero\t";
-  ZeroDirectiveSuffix = 0;
   AsciiDirective = "\t.ascii\t";
   AscizDirective = "\t.asciz\t";
   Data8bitsDirective = "\t.byte\t";
@@ -45,63 +61,99 @@ MCAsmInfo::MCAsmInfo() {
   Data64bitsDirective = "\t.quad\t";
   SunStyleELFSectionSwitchSyntax = false;
   UsesELFSectionDirectiveForBSS = false;
-  AlignDirective = "\t.align\t";
   AlignmentIsInBytes = true;
   TextAlignFillValue = 0;
-  JumpTableDirective = 0;
-  PICJumpTableDirective = 0;
+  GPRel64Directive = nullptr;
+  GPRel32Directive = nullptr;
   GlobalDirective = "\t.globl\t";
-  SetDirective = 0;
-  LCOMMDirective = 0;
-  COMMDirective = "\t.comm\t";
-  COMMDirectiveTakesAlignment = true;
+  SetDirectiveSuppressesReloc = false;
+  HasAggressiveSymbolFolding = true;
+  COMMDirectiveAlignmentIsInBytes = true;
+  LCOMMDirectiveAlignmentType = LCOMM::NoAlignment;
+  HasFunctionAlignment = true;
   HasDotTypeDotSizeDirective = true;
   HasSingleParameterDotFile = true;
-  UsedDirective = 0;
-  WeakRefDirective = 0;
-  WeakDefDirective = 0;
-  // FIXME: These are ELFish - move to ELFMAI.
-  HiddenDirective = "\t.hidden\t";
-  ProtectedDirective = "\t.protected\t";
-  AbsoluteDebugSectionOffsets = false;
-  AbsoluteEHSectionOffsets = false;
-  HasLEB128 = false;
-  HasDotLocAndDotFile = false;
+  HasIdentDirective = false;
+  HasNoDeadStrip = false;
+  WeakDirective = "\t.weak\t";
+  WeakRefDirective = nullptr;
+  HasWeakDefDirective = false;
+  HasWeakDefCanBeHiddenDirective = false;
+  HasLinkOnceDirective = false;
+  HiddenVisibilityAttr = MCSA_Hidden;
+  HiddenDeclarationVisibilityAttr = MCSA_Hidden;
+  ProtectedVisibilityAttr = MCSA_Protected;
   SupportsDebugInformation = false;
   ExceptionsType = ExceptionHandling::None;
-  DwarfRequiresFrameSection = true;
-  DwarfUsesInlineInfoSection = false;
-  Is_EHSymbolPrivate = true;
-  GlobalEHDirective = 0;
-  SupportsWeakOmittedEHFrame = true;
-  DwarfSectionOffsetDirective = 0;
+  WinEHEncodingType = WinEH::EncodingType::Invalid;
+  DwarfUsesRelocationsAcrossSections = true;
+  DwarfFDESymbolsUseAbsDiff = false;
+  DwarfRegNumForCFI = false;
+  NeedsDwarfSectionOffsetDirective = false;
+  UseParensForSymbolVariant = false;
+  UseLogicalShr = true;
+
+  // FIXME: Clang's logic should be synced with the logic used to initialize
+  //        this member and the two implementations should be merged.
+  // For reference:
+  // - Solaris always enables the integrated assembler by default
+  //   - SparcELFMCAsmInfo and X86ELFMCAsmInfo are handling this case
+  // - Windows always enables the integrated assembler by default
+  //   - MCAsmInfoCOFF is handling this case, should it be MCAsmInfoMicrosoft?
+  // - MachO targets always enables the integrated assembler by default
+  //   - MCAsmInfoDarwin is handling this case
+  // - Generic_GCC toolchains enable the integrated assembler on a per
+  //   architecture basis.
+  //   - The target subclasses for AArch64, ARM, and X86 handle these cases
+  UseIntegratedAssembler = false;
 
-  AsmTransCBE = 0;
+  CompressDebugSections = false;
 }
 
 MCAsmInfo::~MCAsmInfo() {
 }
 
+bool MCAsmInfo::isSectionAtomizableBySymbols(const MCSection &Section) const {
+  return false;
+}
 
-unsigned MCAsmInfo::getULEB128Size(unsigned Value) {
-  unsigned Size = 0;
-  do {
-    Value >>= 7;
-    Size += sizeof(int8_t);
-  } while (Value);
-  return Size;
+const MCExpr *
+MCAsmInfo::getExprForPersonalitySymbol(const MCSymbol *Sym,
+                                       unsigned Encoding,
+                                       MCStreamer &Streamer) const {
+  return getExprForFDESymbol(Sym, Encoding, Streamer);
 }
 
-unsigned MCAsmInfo::getSLEB128Size(int Value) {
-  unsigned Size = 0;
-  int Sign = Value >> (8 * sizeof(Value) - 1);
-  bool IsMore;
+const MCExpr *
+MCAsmInfo::getExprForFDESymbol(const MCSymbol *Sym,
+                               unsigned Encoding,
+                               MCStreamer &Streamer) const {
+  if (!(Encoding & dwarf::DW_EH_PE_pcrel))
+    return MCSymbolRefExpr::create(Sym, Streamer.getContext());
+
+  MCContext &Context = Streamer.getContext();
+  const MCExpr *Res = MCSymbolRefExpr::create(Sym, Context);
+  MCSymbol *PCSym = Context.createTempSymbol();
+  Streamer.EmitLabel(PCSym);
+  const MCExpr *PC = MCSymbolRefExpr::create(PCSym, Context);
+  return MCBinaryExpr::createSub(Res, PC, Context);
+}
+
+static bool isAcceptableChar(char C) {
+  return (C >= 'a' && C <= 'z') || (C >= 'A' && C <= 'Z') ||
+         (C >= '0' && C <= '9') || C == '_' || C == '$' || C == '.' || C == '@';
+}
+
+bool MCAsmInfo::isValidUnquotedName(StringRef Name) const {
+  if (Name.empty())
+    return false;
+
+  // If any of the characters in the string is an unacceptable character, force
+  // quotes.
+  for (char C : Name) {
+    if (!isAcceptableChar(C))
+      return false;
+  }
 
-  do {
-    unsigned Byte = Value & 0x7f;
-    Value >>= 7;
-    IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
-    Size += sizeof(int8_t);
-  } while (IsMore);
-  return Size;
+  return true;
 }